void QgsExpressionLineEdit::setMultiLine( bool multiLine )
{
QString exp = expression();
if ( multiLine && !mCodeEditor )
{
mCodeEditor = new QgsCodeEditorSQL();
mCodeEditor->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
delete mLineEdit;
mLineEdit = nullptr;
QHBoxLayout* newLayout = new QHBoxLayout();
newLayout->setContentsMargins( 0, 0, 0, 0 );
newLayout->addWidget( mCodeEditor );
QVBoxLayout* vLayout = new QVBoxLayout();
vLayout->addWidget( mButton );
vLayout->addStretch();
newLayout->addLayout( vLayout );
delete layout();
setLayout( newLayout );
setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
setFocusProxy( mCodeEditor );
connect( mCodeEditor, SIGNAL( textChanged() ), this, SLOT( expressionEdited() ) );
setExpression( exp );
}
else if ( !multiLine && !mLineEdit )
{
delete mCodeEditor;
mCodeEditor = nullptr;
mLineEdit = new QgsFilterLineEdit();
mLineEdit->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Minimum );
QHBoxLayout* newLayout = new QHBoxLayout();
newLayout->setContentsMargins( 0, 0, 0, 0 );
newLayout->addWidget( mLineEdit );
newLayout->addWidget( mButton );
delete layout();
setLayout( newLayout );
setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Minimum );
setFocusProxy( mLineEdit );
connect( mLineEdit, SIGNAL( textChanged( QString ) ), this, SLOT( expressionEdited( QString ) ) );
setExpression( exp );
}
}
QgsFieldExpressionWidget::QgsFieldExpressionWidget( QWidget *parent )
: QWidget( parent )
, mExpressionDialogTitle( tr( "Expression dialog" ) )
, mDa( 0 )
{
QHBoxLayout* layout = new QHBoxLayout( this );
layout->setContentsMargins( 0, 0, 0, 0 );
mCombo = new QComboBox( this );
mCombo->setEditable( true );
mCombo->setSizePolicy( QSizePolicy::MinimumExpanding, QSizePolicy::Minimum );
mFieldProxyModel = new QgsFieldProxyModel( mCombo );
mFieldProxyModel->sourceFieldModel()->setAllowExpression( true );
mCombo->setModel( mFieldProxyModel );
mButton = new QToolButton( this );
mButton->setSizePolicy( QSizePolicy::Minimum, QSizePolicy::Minimum );
mButton->setIcon( QgsApplication::getThemeIcon( "/mIconExpression.svg" ) );
layout->addWidget( mCombo );
layout->addWidget( mButton );
// give focus to the combo
// hence if the widget is used as a delegate
// it will allow pressing on the expression dialog button
setFocusProxy( mCombo );
connect( mCombo->lineEdit(), SIGNAL( textEdited( QString ) ), this, SLOT( expressionEdited( QString ) ) );
connect( mCombo->lineEdit(), SIGNAL( editingFinished() ), this, SLOT( expressionEditingFinished() ) );
connect( mCombo, SIGNAL( activated( int ) ), this, SLOT( currentFieldChanged() ) );
connect( mButton, SIGNAL( clicked() ), this, SLOT( editExpression() ) );
connect( mCombo->lineEdit(), SIGNAL( returnPressed() ), this, SIGNAL( returnPressed() ) );
}
QgsFieldExpressionWidget::QgsFieldExpressionWidget( QWidget *parent )
: QWidget( parent )
, mExpressionDialogTitle( tr( "Expression dialog" ) )
, mDa( nullptr )
, mExpressionContextCallback( nullptr )
, mExpressionContextCallbackContext( nullptr )
{
QHBoxLayout* layout = new QHBoxLayout( this );
layout->setContentsMargins( 0, 0, 0, 0 );
mCombo = new QComboBox( this );
mCombo->setEditable( true );
mCombo->setSizePolicy( QSizePolicy::MinimumExpanding, QSizePolicy::Minimum );
int width = mCombo->minimumSizeHint().width();
mCombo->setMinimumWidth( width );
mFieldProxyModel = new QgsFieldProxyModel( mCombo );
mFieldProxyModel->sourceFieldModel()->setAllowExpression( true );
mCombo->setModel( mFieldProxyModel );
mButton = new QToolButton( this );
mButton->setSizePolicy( QSizePolicy::Minimum, QSizePolicy::Minimum );
mButton->setIcon( QgsApplication::getThemeIcon( "/mIconExpression.svg" ) );
layout->addWidget( mCombo );
layout->addWidget( mButton );
// give focus to the combo
// hence if the widget is used as a delegate
// it will allow pressing on the expression dialog button
setFocusProxy( mCombo );
connect( mCombo->lineEdit(), SIGNAL( textEdited( QString ) ), this, SLOT( expressionEdited( QString ) ) );
connect( mCombo->lineEdit(), SIGNAL( editingFinished() ), this, SLOT( expressionEditingFinished() ) );
connect( mCombo, SIGNAL( activated( int ) ), this, SLOT( currentFieldChanged() ) );
connect( mButton, SIGNAL( clicked() ), this, SLOT( editExpression() ) );
connect( mFieldProxyModel, SIGNAL( modelAboutToBeReset() ), this, SLOT( beforeResetModel() ) );
connect( mFieldProxyModel, SIGNAL( modelReset() ), this, SLOT( afterResetModel() ) );
// NW TODO - Fix in 2.6
// connect( mCombo->lineEdit(), SIGNAL( returnPressed() ), this, SIGNAL( returnPressed() ) );
mExpressionContext.reset( new QgsExpressionContext() );
mExpressionContext->appendScope( QgsExpressionContextUtils::globalScope() );
mExpressionContext->appendScope( QgsExpressionContextUtils::projectScope() );
}
